SINGAPORE (Reuters) – Bitcoin struck a fresh high in Asian trading on Saturday, extending a two-month rally that saw its market capitalisation cross $1 trillion a day earlier.The worlds most popular cryptocurrency rose to an record $56,620, taking its weekly gain to 18%. It has actually risen more than 92% this year.Bitcoins gains have been fuelled by proof it is gaining approval among traditional financiers and companies, such as Tesla Inc, Mastercard Inc and BNY Mellon.Ether, the second-largest cryptocurrency by market capitalization and everyday volume, struck a record $2,040.62, for a weekly gain of about 12%. Ether is the digital currency or token that helps with transactions on the ethereum blockchain. In the crypto world, the terms ether and ethereum have actually become interchangeable.Ether futures contracts released on derivatives exchange CME previously this month.Reporting by Vidya Ranganathan; Editing by William Mallard